Excruciating rash - possibly PUPPP

Hi...wondering if anyone is dealing with severe itching rash and bright red hives/patches from the breast to buttocks. I'm suffering so badly despite Zyrtec, hydrocortisone Benadryl and gold bond - baby oil - nothing is working anymore. I look like I've got a severe case of poison ivy. Concerned I can't make it through next 10 weeks and allergist and doctors haven't offered much except for lifestyle changes. And the icing is an ingrown hair of cyst on my upper inner thigh/buttock that is heavy, pulsing and hard to sit. Can only take cold showers per doctor. Looking for someone who was somewhere near my situation and offer even a few prayers...debilitated. Hugs to all the mommas and I hope you don't come close to what I have!!!